Biological Assembly 1  

 3D View: Structure | 1D-3D View | Electron Density | Validation Report | Ligand Interaction

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 3-mer - A1B1C1 Pseudo Symmetry: Asymmetric - C1 
Pseudo Stoichiometry: Hetero 3-mer - A2B1 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 126.15 kDa 
• Atom Count: 9088 
• Modelled Residue Count: 1074 
• Deposited Residue Count: 1074 
• Unique protein chains: 3

2Z7X

Crystal structure of the TLR1-TLR2 heterodimer induced by binding of a tri-acylated lipopeptide

• PDB DOI: 10.2210/pdb2Z7X/pdb

• Classification: IMMUNE SYSTEM
• Organism(s): Homo sapiens, Eptatretus burgeri, synthetic construct
• Expression System: Trichoplusia ni
• Mutation(s): No 


• Deposited: 2007-08-29 Released: 2007-10-02 
• Deposition Author(s): Lee, J.O., Jin, M.S., Kim, S.E., Heo, J.Y.

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.10 Å
• R-Value Free: 0.270 
• R-Value Work: 0.244 
• R-Value Observed: 0.244 

Literature

Crystal Structure of the TLR1-TLR2 Heterodimer Induced by Binding of a Tri-Acylated Lipopeptide

Jin, M.S., Kim, S.E., Heo, J.Y., Lee, M.E., Kim, H.M., Paik, S.G., Lee, H., Lee, J.O.

(2007) Cell 130: 1071-1082

• PubMed: 17889651 
• DOI: 10.1016/j.cell.2007.09.008
• Primary Citation of Related Structures:  
  2Z7X, 2Z80, 2Z81, 2Z82


• PubMed Abstract: 
  

TLR2 in association with TLR1 or TLR6 plays an important role in the innate immune response by recognizing microbial lipoproteins and lipopeptides. Here we present the crystal structures of the human TLR1-TLR2-lipopeptide complex and of the mouse TLR2-lipopeptide complex. Binding of the tri-acylated lipopeptide, Pam(3)CSK(4), induced the formation of an "m" shaped heterodimer of the TLR1 and TLR2 ectodomains whereas binding of the di-acylated lipopeptide, Pam(2)CSK(4), did not. The three lipid chains of Pam(3)CSK(4) mediate the heterodimerization of the receptor; the two ester-bound lipid chains are inserted into a pocket in TLR2, while the amide-bound lipid chain is inserted into a hydrophobic channel in TLR1. An extensive hydrogen-bonding network, as well as hydrophobic interactions, between TLR1 and TLR2 further stabilize the heterodimer. We propose that formation of the TLR1-TLR2 heterodimer brings the intracellular TIR domains close to each other to promote dimerization and initiate signaling.

---

Organizational Affiliation: 

Department of Chemistry, Korea Advanced Institute of Science and Technology, Daejon, Korea 305-701.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Toll-like receptor 2, Variable lymphocyte receptor B	A	549	Homo sapiens, Eptatretus burgeri This entity is chimeric	Mutation(s): 0  Gene Names: TLR2, TIL4, VLRB EC: 3.2.2.6
UniProt & NIH Common Fund Data Resources
Find proteins for O60603 (Homo sapiens) Explore O60603  Go to UniProtKB:  O60603
PHAROS:  O60603 GTEx:  ENSG00000137462

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Toll-like receptor 1, Variable lymphocyte receptor B	B	520	Homo sapiens, Eptatretus burgeri This entity is chimeric	Mutation(s): 0  Gene Names: TLR1, KIAA0012, VLRB EC: 3.2.2.6
UniProt & NIH Common Fund Data Resources
Find proteins for Q15399 (Homo sapiens) Explore Q15399  Go to UniProtKB:  Q15399
PHAROS:  Q15399 GTEx:  ENSG00000174125

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details	Image
Pam3CSK4	C	5	synthetic construct	Mutation(s): 0

Oligosaccharides

Help

Entity ID: 4
Molecule	Chains	Chain Length	2D Diagram	Glycosylation
alpha-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-alpha-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose	D	3		N-Glycosylation
Glycosylation Resources
GlyTouCan:  G52260VY GlyCosmos:  G52260VY GlyGen:  G52260VY

Entity ID: 5
Molecule	Chains	Chain Length	2D Diagram	Glycosylation
alpha-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose	E	3		N-Glycosylation
Glycosylation Resources
GlyTouCan:  G62182OO GlyCosmos:  G62182OO GlyGen:  G62182OO

Entity ID: 6
Molecule	Chains	Chain Length	2D Diagram	Glycosylation
beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose	F	3		N-Glycosylation
Glycosylation Resources
GlyTouCan:  G15407YE GlyCosmos:  G15407YE GlyGen:  G15407YE

Entity ID: 7
Molecule	Chains	Chain Length	2D Diagram	Glycosylation
beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose	G	2		N/A
Glycosylation Resources
GlyTouCan:  G90333CG GlyCosmos:  G90333CG GlyGen:  G90333CG

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
PCJ	L [auth C]	(2R)-3-{[(2S)-3-HYDROXY-2-(PALMITOYLAMINO)PROPYL]THIO}PROPANE-1,2-DIYL DIHEXADECANOATE C54 H105 N O6 S GBQDHEZHWNJSLG-OKPYTHRESA-N
NAG	H [auth A], I [auth A], J [auth A], K [auth B]	2-acetamido-2-deoxy-beta-D-glucopyranose C8 H15 N O6 OVRNDRQMDRJTHS-FMDGEEDCSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.10 Å
• R-Value Free: 0.270 
• R-Value Work: 0.244 
• R-Value Observed: 0.244 
• Space Group: P 2₁ 2₁ 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 200.303	α = 90
b = 120.14	β = 90
c = 74.12	γ = 90

Software Package:

Software Name	Purpose
HKL-2000	data collection
PHASER	phasing
CNS	refinement
HKL-2000	data reduction
SCALEPACK	data scaling

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2007-08-29 
• Released Date: 2007-10-02 
Deposition Author(s): Lee, J.O., Jin, M.S., Kim, S.E., Heo, J.Y.

Revision History  

• Version 1.0: 2007-10-02
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Non-polymer description, Version format compliance
• Version 1.2: 2017-08-16
  Changes: Advisory, Refinement description, Source and taxonomy
• Version 1.3: 2017-08-23
  Changes: Source and taxonomy
• Version 2.0: 2020-07-29
  Type: Remediation
  Reason: Carbohydrate remediation
  Changes: Advisory, Atomic model, Data collection, Database references, Derived calculations, Structure summary